The NO12 Nitrate ISE Module is included with the purchase of a WQ-NO3 Sensor. - Facilitates electrode replacement without replacing the entire sensor
- Screw-on module for quick & easy electrode replacement
- Adds years to the life of your WQ-NO3 Sensor
NexSens ISE Sensors are combination electrodes. The ISE half-cell is a replaceable module that features a screw-on design for quick and easy replacement. | 
